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/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 8295753
* @summary Verify correct operation of Path.toRealPath
* @library .. /test/lib
* @build ToRealPath jdk.test.lib.Platform
* @run junit ToRealPath
*/
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import jdk.test.lib.Platform;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.EnabledIf;
import org.junit.jupiter.api.condition.EnabledOnOs;
import org.junit.jupiter.api.condition.OS;
import static java.nio.file.LinkOption.*;
import static org.junit.jupiter.api.Assertions.*;
public class ToRealPath {
static final boolean SUPPORTS_LINKS;
static final Path DIR;
static final Path SUBDIR;
static final Path FILE;
static final Path LINK;
static {
try {
DIR = TestUtil.createTemporaryDirectory();
SUBDIR = Files.createDirectory(DIR.resolve("subdir"));
FILE = Files.createFile(DIR.resolve("foo"));
LINK = DIR.resolve("link");
SUPPORTS_LINKS = TestUtil.supportsLinks(DIR);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
};
public boolean supportsLinks() {
return SUPPORTS_LINKS;
}
@Test
public void locateSameFile() throws IOException {
assertTrue(Files.isSameFile(FILE.toRealPath(),
FILE.toRealPath(NOFOLLOW_LINKS)));
}
@Test
public void failNotExist() {
Path doesNotExist = DIR.resolve("DoesNotExist");
assertThrows(IOException.class, () -> doesNotExist.toRealPath());
}
@Test
public void failNotExistNoFollow() {
Path doesNotExist = DIR.resolve("DoesNotExist");
assertThrows(IOException.class,
() -> doesNotExist.toRealPath(NOFOLLOW_LINKS));
}
@EnabledIf("supportsLinks")
@Test
public void shouldResolveLinks() throws IOException {
Path resolvedFile = FILE;
if (Platform.isWindows()) {
// Path::toRealPath does not work with environments using the
// legacy subst mechanism. This is a workaround to keep the
// test working if 'dir' points to a location on a subst drive.
// See JDK-8213216.
//
Path tempLink = DIR.resolve("tempLink");
Files.createSymbolicLink(tempLink, DIR.toAbsolutePath());
Path resolvedDir = tempLink.toRealPath();
Files.delete(tempLink);
resolvedFile = resolvedDir.resolve(FILE.getFileName());
}
Files.createSymbolicLink(LINK, resolvedFile.toAbsolutePath());
assertTrue(LINK.toRealPath().equals(resolvedFile.toRealPath()));
Files.delete(LINK);
}
@Test
@EnabledIf("supportsLinks")
public void shouldNotResolveLinks() throws IOException {
Files.createSymbolicLink(LINK, FILE.toAbsolutePath());
assertEquals(LINK.toRealPath(NOFOLLOW_LINKS).getFileName(),
LINK.getFileName());
Files.delete(LINK);
}
@Test
public void eliminateDot() throws IOException {
assertEquals(DIR.resolve(".").toRealPath(),
DIR.toRealPath());
}
@Test
public void eliminateDotNoFollow() throws IOException {
assertEquals(DIR.resolve(".").toRealPath(NOFOLLOW_LINKS),
DIR.toRealPath(NOFOLLOW_LINKS));
}
@Test
public void eliminateDots() throws IOException {
assertEquals(SUBDIR.resolve("..").toRealPath(),
DIR.toRealPath());
}
@Test
public void eliminateDotsNoFollow() throws IOException {
assertEquals(SUBDIR.resolve("..").toRealPath(NOFOLLOW_LINKS),
DIR.toRealPath(NOFOLLOW_LINKS));
}
@Test
@EnabledOnOs(OS.MAC)
public final void macOSTests() throws IOException {
// theTarget = dir/subdir/theTarget
Path theTarget = Path.of(SUBDIR.toString(), "theTarget");
Files.createFile(theTarget);
// dir/theLink -> dir/subdir
Path theLink = Path.of(DIR.toString(), "theLink");
Files.createSymbolicLink(theLink, SUBDIR);
// thePath = dir/thelink/thetarget (all lower case)
Path thePath = Path.of(DIR.toString(), "thelink", "thetarget");
Path noFollow = thePath.toRealPath(NOFOLLOW_LINKS);
int nc = noFollow.getNameCount();
// Real path should retain case as dir/theLink/theTarget
assertEquals(noFollow.getName(nc - 2), Path.of("theLink"));
assertEquals(noFollow.getName(nc - 1), Path.of("theTarget"));
assertEquals(noFollow.toString(),
Path.of(DIR.toString(), "theLink", "theTarget").toString());
// Test where a link is preceded by ".." in the path
Path superBeforeLink =
Path.of(SUBDIR.toString(), "..", "thelink", "thetarget");
noFollow = superBeforeLink.toRealPath(NOFOLLOW_LINKS);
nc = noFollow.getNameCount();
assertEquals(noFollow.getName(nc - 2), Path.of("theLink"));
assertEquals(noFollow.getName(nc - 1), Path.of("theTarget"));
// Test where a link is followed by ".." in the path
Path linkBeforeSuper =
Path.of(DIR.toString(), "thelink", "..", "subdir", "thetarget");
noFollow = linkBeforeSuper.toRealPath(NOFOLLOW_LINKS);
nc = noFollow.getNameCount();
assertEquals(noFollow.getName(nc - 4), Path.of("theLink"));
assertEquals(noFollow.getName(nc - 1), Path.of("theTarget"));
Files.delete(theTarget);
}
@AfterAll
public static void cleanup() throws IOException {
Files.delete(SUBDIR);
Files.delete(FILE);
}
}
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